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#[derive(Clone, Debug, Default, PartialEq)]
pub struct Capabilities {
pub add: Option<Vec<String>>,
pub drop: Option<Vec<String>>,
}
impl<'de> serde::Deserialize<'de> for Capabilities {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: serde::Deserializer<'de> {
#[allow(non_camel_case_types)]
enum Field {
Key_add,
Key_drop,
Other,
}
impl<'de> serde::Deserialize<'de> for Field {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: serde::Deserializer<'de> {
struct Visitor;
impl<'de> serde::de::Visitor<'de> for Visitor {
type Value = Field;
fn expecting(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str("field identifier")
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E> where E: serde::de::Error {
Ok(match v {
"add" => Field::Key_add,
"drop" => Field::Key_drop,
_ => Field::Other,
})
}
}
deserializer.deserialize_identifier(Visitor)
}
}
struct Visitor;
impl<'de> serde::de::Visitor<'de> for Visitor {
type Value = Capabilities;
fn expecting(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str("Capabilities")
}
fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error> where A: serde::de::MapAccess<'de> {
let mut value_add: Option<Vec<String>> = None;
let mut value_drop: Option<Vec<String>> = None;
while let Some(key) = serde::de::MapAccess::next_key::<Field>(&mut map)? {
match key {
Field::Key_add => value_add = serde::de::MapAccess::next_value(&mut map)?,
Field::Key_drop => value_drop = serde::de::MapAccess::next_value(&mut map)?,
Field::Other => { let _: serde::de::IgnoredAny = serde::de::MapAccess::next_value(&mut map)?; },
}
}
Ok(Capabilities {
add: value_add,
drop: value_drop,
})
}
}
deserializer.deserialize_struct(
"Capabilities",
&[
"add",
"drop",
],
Visitor,
)
}
}
impl serde::Serialize for Capabilities {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: serde::Serializer {
let mut state = serializer.serialize_struct(
"Capabilities",
self.add.as_ref().map_or(0, |_| 1) +
self.drop.as_ref().map_or(0, |_| 1),
)?;
if let Some(value) = &self.add {
serde::ser::SerializeStruct::serialize_field(&mut state, "add", value)?;
}
if let Some(value) = &self.drop {
serde::ser::SerializeStruct::serialize_field(&mut state, "drop", value)?;
}
serde::ser::SerializeStruct::end(state)
}
}